l8o AXEL LEONARD MELANDER 



striction between the two. Post-thoracic plate broadly triangu- 

 lar, but not crowding the basal abdominal segments so that 

 they become angulate. Abdomen greatly enlarged, regularly 

 oval, broadest at the middle, consisting of nine segments. Legs 

 short, coxae wedge-shaped, radiating from a small central disc. 



I. Hadrachne horribilis, sp. nov. (Plate V, Fig. i; Plate VII, Fig. i). 



The cephalothorax is triangular in outline, bluntly pointed in 

 front. Its texture shows no punctation nor other sculpturing. 

 The sutures between the pedigerous segments are finely indi- 

 cated and converge to a small elliptical, longitudinally disposed 

 central space which may indicate a shallow depression or lie 

 level with the surface. Unfortunately, as in its relatives, 

 although the dorsal surface is exposed, no traces of eyes can be 

 observed. The posterior plate of the thorax has its surface 

 granular. As in its allies, it is crenulate, the ridges curving 

 anteriorly. The post-thoracic shield overlying the base of the 

 abdomen is broad and shallow, its posterior edge quite obtusely 

 rounded, rather than angulate; its surface is impunctate. The 

 six basal segments of the much-swollen abdomen occupy nearly 

 one-half of the body, and are of nearly equal size. At the 

 margin they are widest, and become narrower at the middle to 

 accommodate the post-thoracic shield. The sixth segment is 

 but slightly bowed. These segments are finely punctulate and 

 possibly may have been smooth. The apical half of the abdo- 

 men, however, is decidedly granular, the granules becoming 

 irregular, confused, and confluent apically. No anal tubercle is 

 visible. The incisures of the segments do not interrupt the 

 outline of the abdomen. The lateral sulcus extending longi- 

 tudinally is evident. The legs are remarkably short and slender 

 for so stout a creature. Palpi similar to the legs, equally stout, 

 but somewhat longer. The coxse consist of closely contiguous, 

 distally expanded, wedge-shaped pieces, which meet about a 

 small median inclosure. The remaining segments of the legs 

 are individually stout, not over twice as long as broad. 



Length of whole spider 39™'", of cephalothorax 13°"", of 

 abdomen proper 20""; breadth of cephalothorax at base 14"™, 

 of abdomen at middle 23™™; length of leg-joints 3.5"'". 



